Sour cherries are small, bright red fruits known for their tart flavor. Unlike sweet cherries, they are often used in cooking and baking due to their tangy taste. Sour cherries are commonly found in desserts like pies and jams, where their acidity balances the sweetness of sugar. They are also rich in vitamins and antioxidants, making them a healthy choice. These cherries typically ripen in late spring to early summer and are often harvested for commercial use. Popular varieties include Montmorency and Morello, each with its unique flavor profile. Sour cherries can also be enjoyed fresh, though their tartness may be an acquired taste.